What is the mindset of the Steelers with 3 regular season games to go?

What exactly is the mindset of the 2012 Pittsburgh Steelers, now with just 3 games left on the schedule and the playoffs getting closer by the day? Are they truly a confident team like we always hear them talk about, or is there some doubt in the locker room with their identity and what they are capable of? It would be hard to blame them if there a...